Alert archive / South Dakota / Brown County
Weather alerts in Brown County, South Dakota, 2014
120 weather alerts in 2014, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Brown County and its neighbors
Each county as a circle sized by its count in 2014. Tap one for its archive.
- Alerts
- 120
- Warnings
- 32
- Watches
- 11
- Advisories
- 56
- Busiest month
- June22 alerts
- Busiest day
- June 19, 20147 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
0 of 1 tornado warnings covering Brown County in 2014 had a tornado report inside them.
Brown County, 2014
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 1 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 12 | 6 | 50% | 13 | 69% | 19 min |
| Flash flood warnings | 2 | 2 | 0% | 4 | 100% | 20 min |
Each office's whole area, 2014
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Aberdeen, SD: tornado warnings | 15 | 8 | 47% | 15 | 73% | 12 min |
| NWS Aberdeen, SD: severe thunderstorm warnings | 141 | 78 | 45% | 133 | 75% | 19 min |
| NWS Aberdeen, SD: flash flood warnings | 31 | 22 | 29% | 35 | 97% | 104 min |
An office's figures cover every county it serves, including across state lines.
Verified by the Iowa Environmental Mesonet's Cow, which matches each storm-based warning with the local storm reports inside its polygon while it was in force, within 15 km of its edge: a tornado warning counts as verified on a tornado report, a severe thunderstorm warning on hail of 1 inch or more, a gust of 58 mph or more, or wind damage, a flash flood warning on a flash flood report. The false alarm ratio is the share of warnings with no such report; "inside a warning" is the probability of detection, the share of reports that fell inside one; lead time runs from the warning's issue to each report inside it, counting zero for a report that came first. A warning with no report is not proof nothing happened: reports come from spotters, the public and damage surveys, and are thin where few people live.
The alerts
Every alert, in the order issued. Times are local, Central Time. Each opens its own page with the text, the map, the radar and the sounding.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jan 2, 3:24 PM CST | Winter Weather Advisory | ABR | 42 hr |
| Jan 4, 4:12 AM CST | Wind Chill Warning | ABR | 72 hr |
| Jan 7, 3:14 PM CST | Wind Chill Advisory | ABR | 12 hr |
| Jan 11, 3:10 PM CST | Freezing Rain Advisory | ABR | 18 hr |
| Jan 13, 3:51 AM CST | Winter Weather Advisory | ABR | 32 hr |
| Jan 14, 2:58 PM CST | Blizzard Watch | ABR | 13 hr |
| Jan 15, 4:02 AM CST | Blizzard Warning | ABR | 39 hr |
| Jan 17, 3:41 AM CST | Winter Weather Advisory | ABR | 32 hr |
| Jan 17, 10:27 AM CST | Wind Advisory | ABR | 25 hr |
| Jan 20, 3:37 AM CST | Wind Chill Advisory | ABR | 32 hr |
| Jan 21, 3:35 PM CST | Winter Weather Advisory | ABR | 12 hr |
| Jan 22, 3:58 AM CST | Wind Chill Advisory | ABR | 32 hr |
| Jan 22, 3:58 AM CST | Winter Weather Advisory | ABR | 11 hr |
| Jan 22, 2:59 PM CST | Wind Chill Warning | ABR | 21 hr |
| Jan 24, 4:36 AM CST | Winter Weather Advisory | ABR | 19 hr |
| Jan 25, 4:35 AM CST | Blizzard Watch | ABR | 9 hr |
| Jan 25, 2:01 PM CST | Blizzard Warning | ABR | 39 hr |
| Jan 26, 2:33 PM CST | Wind Chill Warning | ABR | 45 hr |
| Jan 30, 3:13 PM CST | Wind Chill Advisory | ABR | 19 hr |
| Feb 1, 3:01 PM CST | Wind Chill Advisory | ABR | 12 hr |
| Feb 4, 2:50 PM CST | Wind Chill Advisory | ABR | 44 hr |
| Feb 6, 2:51 PM CST | Wind Chill Advisory | ABR | 19 hr |
| Feb 8, 2:35 PM CST | Wind Chill Advisory | ABR | 20 hr |
| Feb 10, 2:33 PM CST | Wind Chill Advisory | ABR | 18 hr |
| Feb 12, 2:48 PM CST | Winter Weather Advisory | ABR | 21 hr |
| Feb 24, 3:32 AM CST | Wind Chill Advisory | ABR | 30 hr |
| Feb 25, 2:51 PM CST | Wind Chill Advisory | ABR | 18 hr |
| Feb 26, 3:28 PM CST | Wind Chill Advisory | ABR | 17 hr |
| Feb 28, 6:45 AM CST | Wind Advisory | ABR | 9 hr |
| Feb 28, 4:02 PM CST | Wind Chill Advisory | ABR | 44 hr |
| Mar 1, 3:12 PM CST | Wind Chill Warning | ABR | 21 hr |
| Mar 2, 3:44 PM CST | Wind Chill Advisory | ABR | 18 hr |
| Mar 17, 2:56 PM CDT | Winter Weather Advisory | ABR | 17 hr |
| Mar 20, 3:23 PM CDT | Wind Advisory | ABR | 28 hr |
| Mar 29, 4:26 AM CDT | Blizzard Watch | ABR | 48 hr |
| Mar 30, 12:01 PM CDT | Blizzard Warning | ABR | 42 hr |
| Mar 31, 3:49 PM CDT | Mesoscale Discussion | SPC | 5 hr |
| Apr 3, 8:43 AM CDT | Winter Weather Advisory | ABR | 3 hr |
| Apr 15, 3:25 PM CDT | Winter Weather Advisory | ABR | 22 hr |
| Apr 18, 3:56 AM CDT | Wind Advisory | ABR | 27 hr |
| Apr 23, 4:12 AM CDT | Wind Advisory | ABR | 15 hr |
| Apr 26, 10:35 AM CDT | Wind Advisory | ABR | 32 hr |
| Apr 27, 1:58 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 4, 9:52 AM CDT | River Flood Warning | ABR | 15 days |
| May 11, 3:12 PM CDT | Wind Advisory | ABR | 28 hr |
| May 13, 3:00 PM CDT | Frost Advisory | ABR | 17 hr |
| May 14, 3:18 PM CDT | Freeze Warning | ABR | 17 hr |
| May 15, 3:18 PM CDT | Freeze Warning | ABR | 17 hr |
| May 17, 9:46 AM CDT | River Flood Warning | ABR | 15 days |
| May 25, 5:57 PM CDT | Severe Thunderstorm Warning | ABR | 33 min |
| May 27, 2:14 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 30, 2:56 PM CDT | Mesoscale Discussion | SPC | 94 min |
| May 30, 3:07 PM CDT | Severe Thunderstorm Warning | ABR | 23 min |
| May 31, 1:50 PM CDT | Flash Flood Watch | ABR | 31 hr |
| Jun 11, 3:36 PM CDT | Mesoscale Discussion | SPC | 84 min |
| Jun 13, 11:22 PM CDT | Severe Thunderstorm Warning | ABR | 38 min |
| Jun 13, 11:54 PM CDT | Severe Thunderstorm Warning | ABR | 42 min |
| Jun 16, 7:33 AM CDT | Mesoscale Discussion | SPC | 57 min |
| Jun 18, 1:13 PM CDT | Mesoscale Discussion | SPC | 92 min |
| Jun 18, 5:23 PM CDT | Mesoscale Discussion | SPC | 97 min |
| Jun 18, 7:37 PM CDT | Tornado Watch | SPC | 6 hr |
| Jun 18, 8:47 PM CDT | Mesoscale Discussion | SPC | 88 min |
| Jun 18, 8:49 PM CDT | Tornado Warning | ABR | 41 min |
| Jun 18, 8:57 PM CDT | Severe Thunderstorm Warning | ABR | 63 min |
| Jun 18, 9:04 PM CDT | Flash Flood Warning | ABR | 6 hr |
| Jun 18, 9:20 PM CDT | Severe Thunderstorm Warning | ABR | 40 min |
| Jun 18, 9:57 PM CDT | Severe Thunderstorm Warning | ABR | 48 min |
| Jun 21, 12:48 PM CDT | Flash Flood Watch | ABR | 15 hr |
| Jun 21, 2:56 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 21, 5:49 PM CDT | Mesoscale Discussion | SPC | 86 min |
| Jun 21, 6:17 PM CDT | Severe Thunderstorm Warning | ABR | 43 min |
| Jun 21, 6:45 PM CDT | Severe Thunderstorm Warning | ABR | 45 min |
| Jun 21, 8:14 PM CDT | Mesoscale Discussion | SPC | 91 min |
| Jun 22, 11:59 PM CDT | River Flood Warning | ABR | 26 days |
| Jun 26, 7:44 PM CDT | Flash Flood Watch | ABR | 31 hr |
| Jun 30, 3:33 AM CDT | Wind Advisory | ABR | 16 hr |
| Jul 5, 6:09 PM CDT | River Flood Warning | ABR | 16 days |
| Jul 20, 4:09 AM CDT | Heat Advisory | ABR | 41 hr |
| Jul 21, 5:07 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 21, 7:56 PM CDT | Special Weather Statement | ABR | 49 min |
| Jul 21, 8:17 PM CDT | Severe Thunderstorm Warning | ABR | 29 min |
| Jul 21, 9:08 PM CDT | Mesoscale Discussion | SPC | 97 min |
| Aug 3, 5:19 PM CDT | Special Weather Statement | ABR | 26 min |
| Aug 3, 5:45 PM CDT | Special Weather Statement | ABR | 30 min |
| Aug 3, 5:51 PM CDT | Severe Thunderstorm Warning | ABR | 39 min |
| Aug 16, 5:02 AM CDT | Dense Fog Advisory | ABR | 4 hr |
| Aug 17, 9:12 PM CDT | Special Weather Statement | ABR | 63 min |
| Aug 23, 3:49 PM CDT | Mesoscale Discussion | SPC | 116 min |
| Aug 23, 6:15 PM CDT | Tornado Watch | SPC | 4 hr |
| Aug 23, 9:39 PM CDT | Mesoscale Discussion | SPC | 66 min |
| Aug 23, 11:38 PM CDT | Flash Flood Warning | ABR | 6 hr |
| Aug 24, 5:20 AM CDT | Areal Flood Warning | ABR | 27 hr |
| Aug 31, 8:56 AM CDT | River Flood Warning | ABR | 4 days |
| Sep 11, 2:46 PM CDT | Frost Advisory | ABR | 18 hr |
| Sep 12, 3:00 PM CDT | Frost Advisory | ABR | 18 hr |
| Sep 19, 2:29 AM CDT | Mesoscale Discussion | SPC | 91 min |
| Sep 25, 4:12 AM CDT | Dense Fog Advisory | ABR | 6 hr |
| Sep 30, 3:57 PM CDT | Mesoscale Discussion | SPC | 93 min |
| Sep 30, 5:09 PM CDT | Severe Thunderstorm Warning | ABR | 52 min |
| Oct 2, 3:26 PM CDT | Wind Advisory | ABR | 27 hr |
| Oct 3, 4:41 AM CDT | Freeze Warning | ABR | 28 hr |
| Oct 16, 3:50 AM CDT | Wind Advisory | ABR | 15 hr |
| Nov 4, 3:23 PM CST | Wind Advisory | ABR | 26 hr |
| Nov 7, 3:53 AM CST | Wind Advisory | ABR | 20 hr |
| Nov 8, 3:27 PM CST | Winter Storm Watch | ABR | 13 hr |
| Nov 9, 4:07 AM CST | Winter Storm Warning | ABR | 34 hr |
| Nov 9, 4:07 AM CST | Winter Weather Advisory | ABR | 41 hr |
| Nov 9, 11:02 PM CST | Mesoscale Discussion | SPC | 5 hr |
| Nov 15, 3:25 PM CST | Winter Weather Advisory | ABR | 30 hr |
| Nov 22, 3:39 PM CST | Wind Advisory | ABR | 44 hr |
| Nov 25, 3:31 AM CST | Winter Weather Advisory | ABR | 29 hr |
| Nov 30, 10:50 AM CST | Wind Chill Advisory | ABR | 23 hr |
| Dec 14, 8:24 AM CST | Dense Fog Advisory | ABR | 10 hr |
| Dec 14, 2:58 PM CST | Winter Weather Advisory | ABR | 33 hr |
| Dec 15, 3:24 AM CST | Freezing Rain Advisory | ABR | 6 hr |
| Dec 21, 9:50 AM CST | Dense Fog Advisory | ABR | 2 hr |
| Dec 22, 5:56 AM CST | Dense Fog Advisory | ABR | 12 hr |
| Dec 26, 8:00 AM CST | Freezing Rain Advisory | ABR | 8 hr |
| Dec 29, 3:20 AM CST | Wind Chill Advisory | ABR | 33 hr |
| Dec 30, 3:01 PM CST | Wind Chill Advisory | ABR | 18 hr |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20132015
Sources
National Weather Service watches, warnings, advisories and statements from the Iowa Environmental Mesonet's VTEC archive, which reconstructs tornado, severe thunderstorm, flash flood and marine warnings back to 1986 from the NWS text archive. Storm Prediction Center watches and mesoscale discussions from SPC's archive through the Mesonet. County centers from the US Census Bureau. Warning verification from the Mesonet's Cow. Rebuilt daily.